Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/02—Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/46—Details
  • F23D14/48—Nozzles
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D14/00—Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
  • F23D14/46—Details
  • F23D14/62—Mixing devices; Mixing tubes
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D99/00—Subject matter not provided for in other groups of this subclass
  • F23D99/002—Burners specially adapted for specific applications
  • F23D99/004—Burners specially adapted for specific applications for use in particular heating operations
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
  • F23D—BURNERS
  • F23D2900/00—Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
  • F23D2900/14—Special features of gas burners
  • F23D2900/14641—Special features of gas burners with gas distribution manifolds or bars provided with a plurality of nozzles

Definitions

• the present invention generally relates to the technical field of surface processing of products made of hard or semi-hard material, and in particular it relates to a flaming head for the surface flame processing of stone and/or ceramic materials.
• the invention also relates to a method for assembling and/or replacing at least one nozzle and/or a first connection member, and/or the distribution manifold in the aforementioned flaming head.
• the action of the jets is adapted to obtain the surface deformations, possibly associated with removal of material, to obtain surface alterations.
• a typical processing which can be carried out with these processing heads is the flame treatment in which the surface of the product is exposed to local surface heating through the direct action of one or more high-temperature flames, generated through the combustion of a working fluid such as gas or mixture of gases ejected by one or more nozzles of the flaming head.
• the action of the flames thus allows to obtain a surface texture whose configuration depends on various parameters, such as the distribution of the nozzles, distance, movement speed and trajectory thereof, as well as of the entire flaming head, with respect to the surface of the product, or of the outlet section of the nozzles.
• SUBSTITUTE SHEET (RULE 26) thereof due to wear or upon reaching the maximum number of scheduled operation hours.
• typical maintenance operations consist in the replacement of ducts for conveying working fluids and/or the replacement of nozzles for dispensing the above fluids, as well as the mixer and/or of the connection members among the various components of the processing head.
• the flaming heads comprise at least one connection member to which there are screwed the nozzles and the ducts for conveying the fluids.
• Such type of connection forces one to use manual tools for maintenance operations, such as wrenches or clamping piers.
• the technical problem addressed by the present invention is to facilitate the maintenance of the worn-out elements of a flaming head.
• the object of the present invention is to solve the aforementioned problem by providing a flaming head for the surface flame processing of stone
• a particular object of the present invention is to conceive a flaming head of the type indicated above which allows the quick replacement of the components thereof.
• Another object of the present invention is to provide a flaming head of the type indicated above which meets the UNI EN 561 standard requirements.
• a further object of the present invention is to provide a flaming head of the type indicated above which allows to overcome the drawbacks related to the maintenance operations in the event of replacement of worn-out components, reducing the replacement times thereof.
• Another object of the present invention is to provide a flaming head and an assembly and replacement method of the type indicated above which allows to reduce the difficulties related to manual removal and new insertion activities.
• a further object of the present invention is to provide a flaming head and an assembly and replacement method of the type indicated above which have high flexibility of use.
• a flaming head for the surface flame processing of stone and/or ceramic materials comprising a mixer of two or more working fluids operatively connected to respective supply lines for supplying working fluids to be mixed, a distribution manifold which can be coupled to at least one nozzle for dispensing a flame and a first connection member for connecting the mixer to the distribution manifold.
• the at least one nozzle, the distribution manifold, the first connection member and the mixer are respectively provided with first, second and third quick coupling locking/unlocking elements adapted to reduce the assembly and/or replacement times.
• the quick coupling locking/unlocking elements comprise at least one respective substantially cylindrical portion interacting
• SUBSTITUTE SHEET (RULE 26) with corresponding locking means for respectively locking the at least one nozzle to the distribution manifold, the distribution manifold to the first connection member and the latter to the mixer.
• the quick coupling locking/unlocking elements meet the UNI EN 561 standard requirements.
• the invention also relates to a method for assembling and/or replacing at least one nozzle and/or of the first connection member, and/or of the distribution manifold in the flaming head, according to claim 10.
• FIG. 1 is a perspective view of the flaming head according to the invention
• FIGS. 2 and 3 are respectively a cross-sectional view and an exploded view of the flaming head of Fig. 1 ;
• FIG. 4 is an enlarged perspective view and a cross-sectional view of the mixer of the flaming head of Fig. 1 ;
• FIG. 5 is an enlarged perspective view and a cross-sectional view of the first connection member of the flaming head of Fig. 1 ;
• FIGS. 6 and 7 are perspective views respectively of the distribution manifold and of at least one nozzle of the head of Fig. 1 .
• a flaming head indicated in its entirety with reference numeral 1 , for the surface flame processing of
• the head 1 may be used for processing products made of basic material of the stoneware type, such as stone, marble, granite, concrete material, conglomerates or the like or ceramic materials, and its derivatives, for carrying out surface processing thereon.
• basic material of the stoneware type such as stone, marble, granite, concrete material, conglomerates or the like or ceramic materials, and its derivatives
• the processing may be directed to obtain on the surface of a product, deformations possibly associated with removal of material to achieve a predetermined pattern or texture.
• the processing may be carried out on the surface to create an ageing effect or an image, even complex.
• the product may be in the form of a slab, plank, block or three- dimensional shaped not necessarily even.
• a machine or system on which the head 1 can be applied which is not shown in the figures as it is of the well-known type, will essentially comprise a support surface on which the product is to be placed.
• the support surface may possibly be horizontal for arranging the vacant surface of the product facing upwards and, therefore, towards the flaming head 1.
• the head 1 may also process surfaces which are inclined or arranged on an inclined support surface with respect to the horizontal one, or even vertical at most.
• the machine or system will further comprise a stationary or movable load-bearing structure, to which the head 1 is to be anchored, and supply means for supplying the head 1 with one or more working fluids, such as oxygen, gas, additives or flammable liquids.
• working fluids such as oxygen, gas, additives or flammable liquids.
• the flaming head 1 comprises a mixer 2 of two or more working fluids operatively connected to respective supply lines 3 for supplying working fluids to be mixed, as shown in FIGS. 1 and 2.
• the head 1 further comprises a distribution manifold 4 which can be coupled to at least one nozzle 5 for dispensing a flame, and a first substantially tubular-shaped connection member 6 for connecting the mixer 2 to the distribution manifold 4.
• a distribution manifold 4 which can be coupled to at least one nozzle 5 for dispensing a flame
• a first substantially tubular-shaped connection member 6 for connecting the mixer 2 to the distribution manifold 4.
• the head 1 comprises a torch 7 for the
• SUBSTITUTE SHEET (RULE 26) connection and distribution of at least one first working fluid and connected to the mixer 2 through a second connection member 8.
• the second connection member 8 is of the bayonet type and comprises at least one pair of pins 9 which can be snap fitted on the torch 7.
• the mixer 2 is substantially cylindrical and comprises a plurality of inlets 10 for respective working fluids, an inner mixing chamber 11 and at least one outlet 12 for the mixed fluid.
• one or more first gaskets 13 may be inserted between the torch 7 and the second connection member 8, and between the torch 7 and the mixer 2 to ensure the airtight sealing between these components of the head 1.
• the distribution manifold 4 comprises a hollow body 14 which is substantially prismatic and closed at the ends 15 thereof.
• the manifold 4 is provided on one side 14A of the hollow body 14 thereof with a plurality of seats 16 for a first cylindrical end 17 of the at least one nozzle 5 and on an opposite side 14B with a fitting 18 for the connection of the manifold 4 to the first connection member 6.
• the first cylindrical end 17 of the at least one nozzle 5 can be inserted into the seat 16 by simple pressure and with the interposition of at least one second heat-resistant gasket 19, as better shown in FIGS. 6, 7.
• the at least one nozzle 5 has on the side 20 opposite to the first cylindrical end 17 several orifices 21 for directing the mixed fluid and a flame towards the surface of the product being processed, as shown in FIG. 3.
• a plurality of nozzles 5 which can be connected to the working fluids to direct respective fluid jets is associated with the hollow body 14 of the manifold 4.
• nozzles 5 be designed to operate with a gas or other inflammable fluid, even liquid, suitable igniting means for the flammable jet may be provided, not illustrated in the drawings, which ignition means are arranged in proximity of the side 20 opposite to the first cylindrical end 17 or in proximity of the series of orifices 21 of the nozzle 5.
• the mixer 2, the distribution manifold 4 and/or the first connection member 6 may comprise a refrigeration system of the per se known type.
• the distribution manifold 4 may comprise a first 22 and a second opening 23 respectively configured for the inflow and outflow of a coolant.
• the at least one nozzle 5, the distribution manifold 4, the first connection member 6 and the mixer 2 are respectively provided with first 24, second 25 and third quick coupling locking/unlocking elements 26 adapted to reduce the assembly and/or replacement times.
• the quick coupling locking/unlocking elements 24, 25, 26 are provided with safety catches of the pin and/or fork type which act as antirelease safety elements.
• Such locking/unlocking elements 24, 25, 26 comprise at least one respective preferably cylindrical portion 27, 28, 29 and respective locking means 30, 31 , 32.
• the portions 27, 28, 29 interact with the respective locking means 30, 31 , 32 for respectively locking the at least one nozzle 5 to the distribution manifold 4, the latter to the first connection member 6 and the first connection member 6 to the mixer 2.
• the first quick coupling locking/unlocking elements 24 comprise at least one first substantially cylindrical portion 27 interacting with the first locking means 30 for locking the at least one nozzle 5 to the distribution manifold 4;
• the second quick coupling locking/unlocking elements 25 comprise at
• SUBSTITUTE SHEET (RULE 26) least one second substantially cylindrical portion 28 interacting with the second locking means 31 for locking the distribution manifold 4 to the first connection member 6;
• the third quick coupling locking/unlocking elements 26 comprise at least one third substantially cylindrical portion 29 interacting with the third locking means 32 for locking the first connection member 6 to mixer 2.
• the first locking means 30 for locking the at least one nozzle 5 to the distribution manifold 4 comprise a grooved profile 33 formed in the first cylindrical end 17 of the nozzle 5, and a first pair of holes 34 formed in the distribution manifold 4.
• the holes of the first pair of holes 34 will be aligned with the grooved profile 33 in the insertion direction of the respective first cylindrical portion 27.
• the second locking means 31 comprise a second pair of holes 35 formed in the fitting 18 of the manifold 4, and a third pair of holes 36 formed in a first tubular portion 37 of the first connection member 6.
• the first connection member 6 has the first tubular portion 37 facing towards the distribution manifold 4.
• the third locking means 32 comprise a fourth pair of holes 38 formed in a second tubular portion 39 of the first connection member 6, and a pair of grooves 40 formed in the mixer 2.
• the first connection member 6 has the second tubular portion 39 facing towards the mixer 2.
• the holes of the fourth pair of holes 38 and the pair of grooves 40 of the mixer 2 will be aligned to each other in the insertion direction of the third cylindrical portion 29 of the third locking/unlocking elements 26.
• the method provides at least the following steps:
• the flaming head and the assembly and replacement method according to the invention achieve the pre- established objects and in particular they allow to facilitate the maintenance of the wearing out elements of the flaming head.
• the present invention is applicable at industrial level because it can be manufactured on industrial scale by industries belonging to the field of surface processing of products made of stone and/or ceramic material.

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• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Applications Claiming Priority (2)

Publications (3)

Family

ID=84370680

Family Applications (1)

Country Status (3)

Family Cites Families (6)

• 2022
  • 2022-09-21 IT IT102022000019311A patent/IT202200019311A1/it unknown
• 2023
  • 2023-09-15 EP EP23787184.3A patent/EP4591007B1/de active Active
  • 2023-09-15 WO PCT/IB2023/059186 patent/WO2024062355A1/en not_active Ceased

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